Abstract: A guide service using a mesh data generating device, a guide service providing server and a smart terminal. In particular, a device for generating mesh data for an object comprises: a marking signal sensing unit that senses a marking signal occurring in the marking for generating mesh data for each object located in a specific space; a data managing unit that sets, as position information on the object, coordinate data of a mesh data generating device, which is measured when the marking signal is sensed; and a coordinate processing unit that generates mash data for the object by using the coordinate data and height data of the object. A manager can reduce entire costs for system construction and maintenance, and a user can intuitively, conveniently, and easily obtain information on an object.